Property-balanced nickel-base superalloys for producing single c

Details Property-balanced nickel-base superalloys for producing single c Property-balanced nickel-base superalloys for producing single c

1994-07-05

2000-06-13

Kastler, Scott

Alloys or metallic compositions

Nickel base

Chromium containing

420448, 148410, C22C 1905

Patent

active

060746025

ABSTRACT:
The present invention is directed to the achievement of increased gas turbine engine efficiencies through further improvements in nickel-base superalloys used to make parts and components for gas turbine engines. The present invention comprises nickel-base superalloys for producing single crystal articles having a significant increase in temperature capability, based on stress rupture strength and low and high cycle fatigue properties, over single crystal articles made from current production nickel-base superalloys. Further, because of their superior resistance to degradation by cyclic oxidation, and their resistance to hot corrosion, the superalloys of this invention possess a balance in mechanical and environmental properties which is unique and has not heretofore been obtained.

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